Solutions by everydaycalculation.com
1st number: 3 0/5, 2nd number: 3/20
155 - 320 is 5720.
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Related: 30/5-3/20 15/5-6/20 15/10-3/20 15/5-3/40 45/5-3/20 15/5-9/20 15/5-3/60 75/5-3/20 15/5-15/20 15/25-3/20 15/5-21/20 15/35-3/20
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